Edward Elmer Smith PhD (also E. E. Smith, E. E. "Doc" Smith, Doc Smith, "Skylark" Smith, or—to his family—Ted) (May 2, 1890 – August 31, 1965) was an American food engineer (specializing in doughnut and pastry mixes) and early science fiction author, best known for the Lensman and Skylark series. He is sometimes called the father of space opera.

Edward Elmer Smith was born in Sheboygan, Wisconsin on May 2, 1890 to Fred Jay Smith and Caroline Mills Smith, both staunch Presbyterians of British ancestry.[2] His mother was a teacher born in Michigan in February 1855; his father was a sailor, born in Maine in January 1855 to an English father.[3] They moved to Spokane, Washington the winter after Edward Elmer was born,[4] where Mr. Smith was working as a contractor in 1900.[3] In 1902 the family moved to Seneaquoteen,[5] near the Pend Oreille River, in Kootenai County, Idaho.[6] He had four siblings, Rachel M. born September 1882, Daniel M. born January 1884, Mary Elizabeth born February 1886 (all of whom were born in Michigan), and Walter E. born July 1891 in Washington.[3] In 1910, Fred and Caroline Smith and their son Walter were living in the Markham Precinct of Bonner County, Idaho; Fred is listed in census records as a farmer.[7]

Smith worked primarily as a manual laborer until he injured his wrist, at the age of 19, while escaping from a fire. He attended the University of Idaho. (Many years later he would be installed in the 1984 Class of the University of Idaho Alumni Hall of Fame.)[8] He entered its prep school in 1907, and graduated with two degrees in Chemical Engineering in 1914. He was president of the Chemistry Club, the Chess Club, and the Mandolin and Guitar Club, and captain of the Drill and Rifle Team; he also sang the bass lead in Gilbert and Sullivan operettas.[9] His undergraduate thesis was Some Clays of Idaho, co-written with classmate Chester Fowler Smith, who died in California of tuberculosis the following year, after taking a teaching fellowship at Berkeley.[10] It is not known whether the two were related.

On October 5, 1915, in Boise, Idaho[11] he married Jeanne Craig MacDougall, the sister of his college roommate, Allen Scott (Scotty) MacDougall.[12] (Her sister was named Clarissa MacLean MacDougall; the heroine of the Lensman novels would later be named Clarissa MacDougall.) Jeanne MacDougall was born in Glasgow, Scotland; her parents were Donald Scott MacDougall, a violinist, and Jessica Craig MacLean. Her father had moved to Boise, Idaho when the children were young, and later sent for his family; he died while they were en route in 1905. Jeanne's mother, who remarried businessman and retired politician John F. Kessler in 1914[13] worked at, and later owned, a boarding house on Ridenbaugh Street.

Verna Jean (later Verna Smith Trestrail), born August 25, 1920 in Michigan, his literary executor until her death in 1994. (Her son Kim Trestrail is now the executor.[14]) Robert A. Heinlein in part dedicated his 1982 novel Friday to Verna.[15]

A scene from the first installment of The Skylark of Space, August 1928

After college, Smith was a junior chemist for the National Bureau of Standards in Washington, D.C., developing standards for butter and for oysters.[17] He may have served as a lieutenant in the U.S. Army during World War I, but details are unknown.[18] His draft card, partly illegible, seems to show that Smith requested exemption from military service, based on his wife's dependence and on his contribution to the war effort as a civilian chemist.[19]

One evening in 1915, the Smiths were visiting a former classmate from the University of Idaho, Dr. Carl Garby, who had also moved to Washington, D.C. He lived nearby in the Seaton Place Apartments with his wife, Lee Hawkins Garby. A long discussion about journeys into outer space ensued and it was suggested that Smith should write down his ideas and speculations as a story about interstellar travel. Although he was interested, Smith believed that some thought that some romantic elements would be required and he was uncomfortable with that.

Mrs. Garby offered to take care of the love interest and the romantic dialogue, and Smith decided to give it a try. The sources of inspirations for the main characters in the novel were themselves; the "Seatons" and "Cranes" were based on the Smiths and Garbys respectively.[20] About one-third of The Skylark of Space was completed by the end of 1916, when Smith and Garby gradually abandoned work on it.

In 1919 Smith was hired as chief chemist for F. W. Stock & Sons of Hillsdale, Michigan, at one time the largest family-owned mill east of the Mississippi,[25] working on doughnut mixes.[5]

One evening late in 1919, after moving to Michigan, Smith was baby-sitting (presumably for Roderick) while his wife attended a movie; he resumed work on The Skylark of Space, finishing it in the spring of 1920.[26][27] He submitted it to many book publishers and magazines, spending more in postage than he would eventually receive for its publication. Bob Davis, editor of Argosy, sent an encouraging rejection letter in 1922, saying that he liked the novel personally, but that it was too far out for his readers.[28] (According to Warner, but no other source, Smith began work on the sequel, Skylark III, before the first book was accepted.) Finally, upon seeing the April 1927 issue of Amazing Stories, he submitted it to that magazine; it was accepted, initially for $75, later raised to $125.[29] It was published as a three-part serial in the August to October 1928 issues[1] and it was such a success that managing editor Sloane requested a sequel before the second installment had been published.[30]

Mrs. Garby was not interested in further collaboration so Smith began work on Skylark Three alone.[31] It was published as another three-part serial, in the August to October 1930 issues of Amazing, introduced as the cover story for August.[1] (In 1930 the Smiths were living in Michigan, at 33 Rippon Avenue in Hillsdale.)[32] This was as far as he had planned to take the Skylark series; it was praised in Amazing's letter column,[33] and he was paid 3/4¢ per word, surpassing Amazing's previous record of half a cent.[34]

Smith then began work on what he intended as a new series, starting with Spacehounds of IPC,[35] which he finished in the autumn of 1930.[36] In this novel he took pains to avoid the scientific impossibilities which had bothered some readers of the Skylark novels.[37] Even in 1938, after he had written Galactic Patrol, Smith considered it his finest work;[36] he later said of it, "This was really scientific fiction; not, like the Skylarks, pseudo-science";[38] and even at the end of his career he considered it his only work of true science fiction.[39] It was published in the July through September 1931 issues of Amazing, but with unauthorized changes by Sloane.[40] Fan letters in the magazine complained about the novel's containment within the solar system, and Sloane sided with the readers. So when Harry Bates, editor of Astounding Stories, offered Smith 2¢/word—payable on publication—for his next story, he agreed; this meant that it could not be a sequel to Spacehounds.[34]

This book would be Triplanetary, "in which scientific detail would not be bothered about, and in which his imagination would run riot."[36] Indeed, characters within the story point out its psychological[41] and scientific[42] implausibilities, and sometimes even seem to suggest self-parody.[43] At other times they are conspicuously silent about obvious implausibilities.[44][45] The January 1933 issue of Astounding announced that Triplanetary would appear in the March issue, and that issue's cover illustrated a scene from the story, but Astounding's financial difficulties prevented the story from appearing.[46] Smith then submitted the manuscript to Wonder Stories, whose new editor, 17-year-old Charles D. Hornig, rejected it, later boasting about the rejection in a fanzine.[47] He finally submitted it to Amazing, which published it beginning in January 1934, but for only half a cent a word. Shortly after it was accepted, F. Orlin Tremaine, the new editor of the revived Astounding, offered one cent a word for Triplanetary; when he learned that he was too late, he suggested a third Skylark novel instead.[48]

In the winter of 1933–34 Smith worked on The Skylark of Valeron, but he felt that the story was getting out of control; he sent his first draft to Tremaine, with a distraught note asking for suggestions. Tremaine accepted the rough draft for $850, and announced it in the June 1934 issue, with a full-page editorial and a three-quarter-page advertisement. The novel was published in the August 1934 through February 1935 issues.[1]Astounding's circulation rose by 10,000 for the first issue, and its two main competitors, Amazing and Wonder Stories fell into financial difficulties, both skipping issues within a year. [49]

In January 1936, a time period where he was already an established science fiction writer, he took a job for salary plus profit-sharing, as a food technologist (a cereal chemist) at the Dawn Doughnut Company of Jackson, Michigan.[50] This initially entailed almost a year's worth of eighteen-hour days and seven-day workweeks. Individuals who knew Smith confirmed that he had a role in developing mixes for doughnuts and other pastries, but the contention that he developed the first process for making powdered sugar adhere to doughnuts cannot be substantiated.[51] Smith was reportedly dislocated from his job at Dawn Doughnuts by pre-war rationing in early 1940.[52]

Smith had been contemplating writing a "space-police novel" since early 1927;[53] once he had "the Lensmen's universe fairly well set up", he reviewed his science fiction collection for "cops-and-robbers" stories. He cites Clinton Constantinescue's "War of the Universe" as a negative example, and Starzl and Williamson as positive ones.[54] Tremaine responded extremely positively to a brief description of the idea.[55]

Once Dawn Doughnuts became profitable in late 1936, Smith wrote an eighty-five-page outline for what became the four core Lensman novels; in early 1937 Tremaine committed to buying them.[56] Segmenting the story into four novels required considerable effort to avoid dangling loose ends; Smith cites Edgar Rice Burroughs as a negative example.[55] After the outline was complete, he wrote a more detailed outline of Galactic Patrol, plus a detailed graph of its structure, with "peaks of emotional intensity and the valleys of characterization and background material." He notes, however, that he was never able to follow any of his outlines at all closely, as the "characters get away from me and do exactly as they damn please."[57] After completing the rough draft of Galactic Patrol, he wrote the concluding chapter of the last book in the series, Children of the Lens.[58]Galactic Patrol was published in the September 1937 through February 1938 issues of Astounding; unlike the revised book edition, it was not set in the same universe as Triplanetary.[59]

Gray Lensman, the fourth book in the series, appeared in Astounding's October 1939 through January 1940 issues. (Note that the frequent British spelling "grey" is simply a recurrent mistake, starting with the cover of the first installment; Moskowitz's usage, "The Grey Lensman", is even harder to justify.[60]) Gray Lensman (and its cover illustration) was extremely well received. Campbell's editorial in the December issue suggested that the October issue was the best issue of Astounding ever, and Gray Lensman was first place in the Analytical Laboratory statistics "by a lightyear", with three runners-up in a distant tie for second place.[61] The cover was also praised by readers in Brass Tacks, and Campbell noted, "We got a letter from E. E. Smith saying he and Hubert Rogers agreed on how Kinnison looked."[62]

Smith worked for the US Army between 1941 and 1945. An extended segment in the novel version of Triplanetary, set during World War II, suggests intimate familiarity with explosives and munitions manufacturing. Some biographers cite as fact that, just as Smith's protagonist in this segment lost his job over failure to approve sub-standard munitions, Smith did as well. Smith began work for the J. W. Allen Company (a manufacturer of doughnut and frosting mixes) in 1946 and worked for them until his professional retirement in 1957.[52]

Robert A. Heinlein and Smith were friends. (Heinlein dedicated his 1958 novel Methuselah's Children "To Edward E. Smith, PhD"[68]) Heinlein reported that E. E. Smith perhaps took his "unrealistic" heroes from life, citing as an example the extreme competence of the hero of Spacehounds of IPC. He reported that E. E. Smith was a large, blond, athletic, very intelligent, very gallant man, married to a remarkably beautiful, intelligent red-haired woman named MacDougal (thus perhaps the prototypes of 'Kimball Kinnison' and 'Clarissa MacDougal'). In Heinlein's essay, he reports that he began to suspect Smith might be a sort of "superman" when he asked Smith for help in purchasing a car. Smith tested the car by driving it on a back road at illegally high speeds with their heads pressed tightly against the roof columns to listen for chassis squeaks by bone conduction—a process apparently improvised on the spot.

In his non-series novels written after his professional retirement, Galaxy Primes, Subspace Explorers, and Subspace Encounter, E. E. Smith explores themes of telepathy and other mental abilities collectively called "psionics", and of the conflict between libertarian and socialistic/communistic influences in the colonization of other planets. Galaxy Primes was written after critics like Groff Conklin and P. Schuyler Miller in the early 50s accused his fiction for being passé, and he made an attempt to do something more in line with the concepts Astounding editor John W. Campbell encouraged his writers to make stories about. Despite this, it was rejected by Campbell, and it was eventually published by Amazing Stories in 1959. His late story "The Imperial Stars" (1964), featuring a troupe of circus performers involved in sabotage in a galactic empire, recaptured some of the atmosphere from his earlier works and was intended as the first in a new series, with outlines of later parts rumored to still exist.[69]

The fourth Skylark novel, Skylark DuQuesne, ran in the June to October 1965 issues of If, beginning once again as the cover story. Editor Frederik Pohl introduced it with a one-page summary of the previous stories, which were all at least 30 years old.[1]

Smith published two novelettes entitled "Tedric" in Other Worlds Science Fiction Stories (1953) and "Lord Tedric" in Universe Science Fiction (1954). These were almost completely forgotten until after Smith's death. In 1975 a compendium of Smith's works was published, entitled The Best of E. E. "Doc" Smith, containing these two short stories, excerpts from several of his major works, and another short story first published in Worlds of If in 1964 entitled The Imperial Stars.

A few years later and 13 years after Smith's death, Verna Smith arranged with Gordon Eklund to publish another novel of the same name about the same fictional character, introducing it as "a new series conceived by E. E. 'Doc' Smith". Eklund later went on to publish the other novels in the series, one or two under the pseudonym "E. E. 'Doc' Smith" or "E. E. Smith". The protagonist possesses similar heroic qualities common to the heroes in Smith's original novels and can communicate with an extra-dimensional race of beings known as The Scientists, whose archenemy is Fra Villion, a mysterious character described as a dark knight, skilled in whip-sword combat, and evil genius behind the creation of a planetoid-sized "iron sphere" armed with a weapon capable of destroying planets. As a result, Smith is believed by many to be the unacknowledged progenitor of themes that would appear in Star Wars. (In Smith's original short stories, Tedric was a smith (both blacksmith and whitesmith) residing in a small town near a castle in a situation approximately equivalent to England of the 1200s. He received instruction in advanced metallurgy from a time-traveler that wanted to change the situation in his own time by modifying certain events of the past. From this instruction he was able to build better suits of armor and help defeat the villains of the piece. Unlike Elkund's later novels based on these short stories, the original Tedric never left his own time or planet, and fought purely local enemies of his own time period.)

Smith expressed a preference for inventing fictional technologies that were not strictly impossible (so far as the science of the day was aware) but highly unlikely: "the more highly improbable a concept is—short of being contrary to mathematics whose fundamental operations involve no neglect of infinitesimals—the better I like it" was his phrase.[72]

Vortex Blasters (also known as Masters of the Vortex) is set in the same universe as the Lensman novels. It is an extension to the main storyline which takes place between Second Stage Lensmen and Children of the Lens, and introduces a different type of psionics from that used by the Lensmen. Spacehounds of IPC is not a part of the series, despite occasional erroneous statements to the contrary. (It is listed as a novel in the series in some paperback editions of the 1970s.)

Robert A. Heinlein reported that Smith had planned a seventh Lensman novel, set after the events described in Children of the Lens, which was unpublishable at that time (the early 1960s).[75] Smith told Heinlein that the new novel proceeded inexorably from unresolved matters in Children, a statement easily supported by a careful reading of Children. Careful searches by people who knew Smith well (including Frederik Pohl, Smith's editor, and Verna Smith Trestrail, Smith's daughter) have failed to locate any material related to such a story.[citation needed] Smith apparently never wrote any of it down.

On July 14, 1965, barely a month before his death, Smith gave written permission to William B. Ellern to continue the Lensman series, which led to the publishing of "Moon Prospector" in 1965 and New Lensman in 1976. Smith's long-time friend, Dave Kyle, wrote three authorized added novels in the Lensman series that provided background about the major non-human Lensmen. These are:

Smith was widely read by scientists and engineers from the 1930s into the 1970s. Literary precursors of ideas which arguably entered the military-scientific complex include SDI (Triplanetary), stealth (Gray Lensman), the OODA Loop, C3-based warfare, and the AWACS (Gray Lensman).

An influence that is inarguable was described in a June 11, 1947 letter[76] to Doc from John W. Campbell (the editor of Astounding magazine, where much of the Lensman series was originally published). In it, Campbell relayed Captain Cal Laning's[77] acknowledgment that he had used Smith's ideas for displaying the battlespace situation (called the "tank" in the stories) in the design of the United States Navy's ships' Combat Information Centers. "The entire set-up was taken specifically, directly, and consciously from the Directrix. In your story, you reached the situation the Navy was in—more communication channels than integration techniques to handle it. You proposed such an integrating technique and proved how advantageous it could be. You, sir, were 100% right. As the Japanese Navy—not the hypothetical Boskonian fleet—learned at an appalling cost."

One underlying theme of the later Lensman novels was the difficulty in maintaining military secrecy—as advanced capabilities are revealed, the opposing side can often duplicate them. This point was also discussed extensively by John Campbell in his letter to Doc.[78] Also in the later Lensman novels, and particular after the "Battle of Klovia" broke the Boskonian's power base at the end of Second Stage Lensmen, the Boskonian forces and particularly Kandron of Onlo reverted to terroristic tactics to attempt to demoralize Civilization, thus providing an early literary glimpse into this modern problem of both law enforcement and military response. The use of "Vee-two" gas by the pirates attacking the Hyperion in Triplanetary (in both magazine and book appearances) also suggests anticipation of the terrorist uses of poison gases. (But note that Smith lived through WW I, when the use of poison gas on troops was well known to the populace; extending the assumption that pirates might use it if they could obtain it was no great extension of the present-day knowledge.)

The beginning of the story the Skylark of Space describes in relative detail the protagonist's research into separation of platinum group residues, subsequent experiments involving electrolysis and the discovery of a process evocative of cold fusion (over 50 years before Stanley Pons and Martin Fleischmann). He describes a nuclear process yielding large amounts of energy and producing only negligible radioactive waste—which then goes on to form the basis of the adventures in the Skylark books. Smith's general description of the process of discovery is highly evocative of Röntgen's descriptions of his discovery of the X-ray.

Another theme of the Skylark novels involves precursors of modern information technology. The humanoid aliens encountered in the first novel have developed a primitive technology called the "mechanical educator", which allows direct conversion of brain waves into intelligible thought for transmission to others or for electrical storage. By the third novel in the series, Skylark of Valeron, this technology has grown into an "Electronic Brain" which is capable of computation on all "bands" of energy—electromagnetism, gravity, and "tachyonic" energy and radiation bands included. This is itself derived from a discussion of reductionist atomic theory in the second novel, Skylark Three, which brings to mind modern quark and sub-quark theories of elementary particle physics.

Smith acknowledges the help of the Galactic Roamers writers' workshop, plus E. Everett Evans, Ed Counts, an unnamed aeronautical engineer, Dr. James Enright, and Dr. Richard W. Dodson. Smith's daughter, Verna, lists the following authors as visitors to the Smith household in her youth: Lloyd Arthur Eshbach, Heinlein, Dave Kyle, Bob Tucker, Williamson, Frederik Pohl, Merritt, and the Galactic Roamers. Smith cites Bigelow's Theoretical Chemistry–Fundamentals as a justification for the possibility of the inertialess drive. There is also an extended reference to Rudyard Kipling's "Ballad of Boh Da Thone” in Gray Lensman (chapter 22, "Regeneration,” in a conversation between Kinnison and MacDougall).

Sam Moskowitz's biographical essay on Smith in Seekers of Tomorrow states that he regularly read Argosy magazine, and everything by H.G. Wells, Jules Verne, H. Rider Haggard, Edgar Allan Poe, and Edgar Rice Burroughs. Moskowitz also notes that Smith's "reading enthusiasms included poetry, philosophy, ancient and medieval history, and all of English literature."[83] (Smith's grandson notes that he spoke, and sang, German.[84]) The influence of these is not readily apparent, except in the Roman section of Triplanetary, and in the impeccable but convoluted grammar of Smith's narration. Some influence of nineteenth century philosophy of language may be detectable in the account in Galactic Patrol of the Lens of Arisia as a universal translator, which is reminiscent of Frege's strong realism about Sinn, that is, thought or sense.

Both Moskowitz and Smith's daughter Verna Smith Trestrail report that Smith had a troubled relationship with John Campbell, the editor of Astounding.[citation needed] It is noteworthy that Smith's most successful works were published under Campbell, but the degree of influence is uncertain. The original outline for the Lensman series had been accepted by F. Orlin Tremaine,[58] and Smith angered Campbell by showing loyalty to Tremaine at his new magazine, Comet, when he sold him "The Vortex Blaster" in 1941.[85] Campbell's announcement of Children of the Lens, in 1947, was less than enthusiastic.[86] Campbell later said that he published it only reluctantly,[87] though he praised it privately,[88] and bought little from Smith thereafter.

Steve 'Slug' Russell wrote one of the first computer games, Spacewar!, with inspiration from the space battles from the Lensman series.

The GURPS role-playing game includes a worldbook based on the Lensman series.

There is a Japanese Lensmananime, but it is more an imitation of Star Wars than a translation of the Lensman novels. Efforts to print translations of the associated manga in the United States in the early 1990s without payment of royalties to the Smith family were successfully blocked in court by Verna Smith Trestrail with the help of several California science fiction authors and fans.

Thomas Sheridan (1977). E. E. "Doc" Smith, Father of Star Wars. Necronomicon Press. 8pp. Reprint of an article in Fantasy Review, 1948. Describes itself as an interview, but is mostly an essay with some extended quotations.

^ abcdeE. E. Smith at the Internet Speculative Fiction Database (ISFDB). Retrieved April 19, 2013. Select a title to see its linked publication history and general information. Select a particular edition (title) for more data at that level, such as a front cover image or linked contents.

^Moskowitz p. 11. For this and all following dates, see also the timelines in Lucchetti pp. 31–35 and 113–47 and, to a lesser extent, Sanders pp. 1–2.

^"Doughnut Specialist Smith" says "It wasn't until 1919 that work really began ... Five years passed before acceptance by the first science-fiction magazine on the American market, and two more years elapsed before it was published." This is not consistent with other sources.

^For example, one letter from John W. Campbell on pages 567–68 of the September issue ends by stating that Skylark of Space had been "the best story of scientifiction ever printed"—although most of the letter was devastating criticism of the science in the story.

^Costigan & Bradley's lack of comment when they discover that the ship they are on has passed the speed of light, February p. 84, p. 168. This is the first mention in the story of faster-than-light travel.

^Costigan & Bradley's failure to object, when told of the Nevians' impending second raid on Tellus (Earth), that they could easily obtain iron without further destruction, February p. 88, p. 175.

^The earliest web source for this claim seems to be Computer games: 40 years of fun, ZDNet UK, November 23, 2001 by Graeme Wearden; the article does not provide a source, and the claim may have been added by a colleague. (Private correspondence, July 4, 2006.) Searches at Google patent (www.google.com/patent) on various combinations of Smith's name have not uncovered any patents which relate to his professional biography and supposed accomplishments in the pastry field.

^Gharlane LensFaq section 1, Moskowitz p. 19, "The Epic of Space" p. 85. Note that Smith's account in "The Epic of Space" does not mention Tremaine's commitment. Moskowitz says that the outline was eighty pages; Smith only mentions that the section on Galactic Patrol was "only a few pages long."

^The Commandant's account of the Patrol's early history at the beginning of the magazine version of Galactic Patrol does not describe what happened in the magazine version of Triplanetary; the reference to Virgil Samms and the Triplanetary Patrol is a later interpolation. (Astounding September 1937 pp. 12–13; cp. Fantasy Press edition pp. 8–9.) The reference to "the days of the semi-inert drive" and the Third Galactic Survey on page 34 of the same issue is not consistent with the history of partial inertialessness in either version of Triplanetary, and is omitted from page 42 of the Fantasy Press edition. (Amazing March 1934 pp. 28 & 33; cp. Fantasy Press edition pp. 223 & 231.) See also Gharlane's Lens FAQ Question 1. The Arisians' near-omniscience about the future is also interpolated, e.g., Astounding January 1938 p. 127 vs. first edition p. 205.

^"The Epic of Space" p. 80. The conventional spelling is "Tweel", though the most accurate spelling is "Trrrweerrlll." ("A Martian Odyssey", The Best of Stanley G. Weinbaum p. 5.)

^Both Constantinescu's name and title are misspelled in the essay: Canstantinescu's "War of the Universes", p. 84.

^Clinton Constantinescu (1912–1999), later Clinton Constant, was a Romanian Canadian chemical engineer and a member of the American Astronomical Society and several other scientific associations [2]. "War of the Universe", one of his forays into Science Fiction, depicted a grand multi-sided space melee using a great variety of super-science weapons, and involving various human races which developed independently of each other on many planets, as well as insectoid, birdlike and termite-like creatures. A summary is provided on p. 83 of Everett Franklin Bleiler and Richard Bleiler's "Science-fiction: The Gernsback Years"[3]

^In "The Epic of Space", Smith reveals that the core books of the Lensman series, Galactic Patrol, Gray Lensman, Second Stage Lensmen, and Children of the Lens, were conceived as a unified whole. Some recommend reading the books in this order, followed by the revised Triplanetary, First Lensman, and The Vortex Blaster. The original versions of the core books are not consistent with the original version of Triplanetary; the connections between them are later interpolations.

^The magazine version of Triplanetary was not part of the original Lensman series. For the book versions, passages were interpolated into the original Triplanetary, and earlier, pre-space-flight sections were added, forming the first third of the book. Some passages were added to or removed from the core books, to make them consistent with the new version of Triplanetary.